Contains papers of the following: Fergusson of Kilkerran, 1766-1771 (on the Sutherland Peerage case); Ferguson of Pitfour, 1764-1774, undated; Dr Adam Ferguson, 1774 (referring to Lord Chesterfield, ‘Ossian’ Macpherson, etc., with verses “To Miss Grace Campbell on seeing her fiction on Shalgay’s Cave”); James Ferguson, astronomer, 1754-1774; Finlay, 1712; Fletcher: Andrew, Lord Milton, 1747-1753; Andrew, of Saltoun, 1768; Forbes: Lord Forbes, 1762-1763; of Craigievar, 1765; of New, 1759-1774; of Pitsligo, 1773-1776; John, Minister of Deer, 1761.